const fileContentType = {
  "jpg": "image/jpeg",
  "png": "image/png",
  "jpeg": "image/jpeg",
  "gif": "image/gif",
  "svg": "image/svg+xml",
  "aac": "audio/mp4",
  "mp3": "audio/mpeg",
  "wav": "audio/x-wav",
  "mp4": "video/mp4",
  "avi": "video/x-msvideo",
  "flv": "video/x-flv",
  "3gp": "video/3gpp",
  "mov": "video/quicktime",
};
